I have a 96 eclipse. Every time I fill my reservoir with coolant it disappears like a couple days later. When its empty the gauge gets close to overheating especially when the car is stopped but so far it doesn't when i fill it up works good now i just took a look at it while filling it up and checked my spark plugs and one of them(far left) was leaking oil and u could see the bubbles ...im not sure if that has anything to do with it but there are no leaks whatsoever and the radiator was just replaced couple months ago so im trying to figure out what the problems is...maybe the head gasket but i'm not sure...need help thanks in advance...